It is the world’s 5th largest stock market by market capitalization and one of the two stock exchanges operating independently in the People’s Republic of China. Unlike the Hong Kong Stock Exchange, the SSE is not entirely open to foreign investors. The main reason is tight capital account controls by Chinese authorities. The securities listed at the SSE include the three main categories of stocks, bonds, and funds. Bonds traded on SSE include treasury bonds, corporate bonds, and convertible corporate bonds. The largest company in SSE is PetroChina.

The Shanghai Stock Exchange is a Chinese stock exchange or bourse based in the city of Shanghai. It is one of the three stock exchanges operating independently in the People’s Republic of China. The other two are the Shenzhen Stock Exchange and the Hong Kong Stock Exchange. But the contrast to the Hong Kong Stock Exchange, the Shanghai Stock Exchange is still not entirely open to foreign investors due to tight capital account controls exercised by the Chinese mainland authorities.

The constituents for SSE Composite Index covers all listed stocks of A Group and B Group shares at Shanghai Stock Exchange.The base date for SSE Composite Index is December 19, 1990. The base value was set to 100. The index was launched on July 15, 1991.